Wait for rand::gen_f64 to generate a number greater than 1.0

randfloat.rs

import rand::rng;

fn main() {
    let mut count : u64 = 0;
    let rng = rand::seeded_rng(~[17]);
    loop {
	let r = rng.gen_f64();
	if r > 1.0f64 {
	    io::println(#fmt("%s > 1.0 (after %? tries)",
			     float::to_str_exact(r as float, 16), count));
	    break;
	}
	count += 1;
    }
}